Machine for pointing wire nails



(No Model.) y s sheets-sheen `1.

S. LORING 8v E. S. MORTON. Y

MACHINE POR P OINTING'WIRB NAILS.

Patented June 9, 1885.

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MACHINE FOR POINTING WIRE NAILS. No. 319,735. PatentedJune 9, 1885.

(Np Model.)

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Pme'ntedJune 9, 1885.

(No Model.)

S. LORING 8v E. S. MORTON. MACHINE FOR POINTING WIRE NAILS.

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mi UNirnD STATEa-PATENT @Lirica SAMUEL LOEING, OF DUXBURY, AND EPHRAIMSTEPHEN MORTON, OF PLYMOUTH, MASSACHUSETTS.

MACHINE FOR PolN'TlNc WIRE NAlLs.

SPECIFICATION :forming part of Letters Patent No. $19,735, dated June 9,1885.

Application filed September l0, 1884.

To cil/ZZ whom it may concern:

Be it known that we, SAMUEL LORING, of Duxbury, in the county ofPlymouth, and EPHRAIM S. MORTON, of Plymouth, in the countyv ofPlymouth, both in the State of'Mas-` sachusetts, have invented certainImprovements in Machines for Pointing Wirev Nails and other Articles, ofwhich the following is a specification.

This invention has for its object to provide an improved machine forforming true conical points on wirenails; and it consists, as awhole, inan organized machine comprising a rotary grinding-wheel, a, a fixedguide, and a moving belt, between which a series of nails may be heldwith one end of each nail in contact with the wheel, the movement of thebelt causing said nails both to rotate and move progressively along thewheel, a chute or raceway to feedl the nails to the point where theymeet the belt and are moved thereby into the space Of the accompanyingdrawings, forming a part of this specication, Figure l represents a topview of a machine embodying our invention. Fig. 2 represents aperspective view of a portion of the chute, the fixed guide, the movingbelt, and the spring device. Fig. 3 represents a front elevation. Fig. 4represents a partial front elevation, the portions at the right of liney y, Fig. 5, being removed. Fig. 5 represents an end elevation showingthe supporting-bed in-section. Fig. 6 represents a section on line x x,Fig. 3.

The same letters of reference indicate the same parts in all the gures.

In the drawings, a represents a grinding wheel or cylinder, of emery orother suitable material, mounted on a substantially horizontal arbor, b.

c represents a fixed supporting bed or base on which rests a plate, d,supporting the devices hereinafter described, whereby the nails to bepointed are presented to the grindingwheel. On the plate cZ arestandards e e, to which is affixed a frame or bracket, f, extendingalong one side of the wheel. To the frame (No model.)

f is attached a plate, g, which is offset at its outer side to form ashoulder, 2.

h represents a plate secured to the plate g by screws i', and having aiiange, j, projecting over the shoulder 2 and separated from saidshoulder by a space sufficiently wide to receive the thickness of thehead of a nail, k, as shown in Figs. 5 and 6. The surface ofthe plate gbelow the shoulder 2 is slightly roughened or corrugated, for apurposehereinafter explained.

Z Z represent vertical arbors having bearings in the plate cZ andbracket or frame f, and provided with gears m m, which are connected bya central gear, n, journaled on a stud affixed to the plate d. To thecentral gear, n, is affixed a worm-wheel, o, meshing with a worm on adriving-shaft, p.

The arbors Z Z are rotated positively by the described gearing. To theupper ends of the arbors Z Z are affixed pulleys q q', on which runs abelt, i", preferably of rawhide, backed by a chain belt, s, which bearsdirectly on the pulleys q q', while the belt r bears against the outersurface of the chain belt. The portion of the belt nearest thegrinding-Wheel runs substantially parallel with the corrugated surfaceof the plate g below the shoulder 2, and is pressed toward said surfaceby a series of pressure-blocks, t, pivoted to arms u, and pressedagainst the inner surface of the chain belt by springs o on rods, whichare pivoted to the arms u and slide in orifices in a iiange on the framef. The arms u are pivoted on a rod, fw, supported by the frame. arepresents an inclined chute or raceway formed to conduct heated wirenails 7c from a reservoir (not shown) to the point where each nail as itmoves down the chute will bear simultaneously against the belt i and thecorrugated surface of the plate g. Each nail when it reaches said pointis carried along said plate by the motion of the belt, and is at thesame time caused to rotate by its contact with said corrugated surface.The heads of the nails project over the shoulder 2, which supports theseries of nails as they are thus moved along. The opposite ends of thenails thus grasped and moved bear against the periphery of thegrinding-wheel. The result of the IOO . finger c.

progressive and rotary movements of the nails while in contact with thewheel is the formation of true conical points on theinails,

as shown in Fig. 4. After passing along the entire length of the wheelthe nails drop from between the belt r and plate g into a suitable spoutor receptacle. To prevent the nails from interfering with each otherwhile they are being pointed, we provide a separator composed of aspring-arm, b', secured at d to t-he frame f, and having a inger, c',which normally stands in the path of the nails as they pass between thebelt r and plate g. A series of pins, f on the pulley g moves under thefree end of the arm b and raises said arm intermittently. Each time thatthe arm b is thus raised one nail is allowed to pass the Contact betweenthe nails while they are being moved progressively and rotated is thusprevented.

d d represent idlepulleys journaled on plates e e', adj ustably securedto the frame f, and bearing against the rear portion of the belt to keepthe same taut. The frame f is adapted to be adjusted vertically on thestandards e e, so as to present the points of the nails tothe wheel atany desired height, and thus obtain any desired taper at the point. Tothis end the frame f is secured to the standards e f by bolts-g', Fig.5, passing through slots in said standards.

Vertical screws h h in the frame f bear on the upper ends of thestandards and constitute ladj ustable stops. The necessary horizontalchange of position of the frame required by any vertical change isafforded by the adjustable supporting plate e, which is held in anyposition to which it may be adj usted by set-screws t" i', working inlugs on the base c, and bearing against the plate d, as shown in Fig. 5.It will be seen that the spring-pressure blocks tkeep the belt in closecontact with the nails while they are being rotated and pointed.

The conical points formed by our improved machines are necessarily atthe center of the nail; hence the nail will not be deflected from astraight line while being driven. The points of wire nails as formed bydies are liable to bemore or less one-sided, and when so formed areliable to cause the nail to deviate from the desired direction whenbeing driven. This difiiculty we entirely overcome.

This improved machine may be used for pointing other analagousarticles-such as rivetsgtacks, brads, &c.

We el'aim^-----f f y' 1. In an organized IHine for pointing headed wirenails and other like articles, the

y combination of a chute or raceway, a grinding-- wheel, a fixed platehaving a continuous surface or support for the Shanks of the nails and ashoulder to support the heads of the nails, a belt running substantiallyparallel with said fixed plate and causing the nails to roll along thelatter, devices, substantiallyas described, for pressing the beltagainst nails interposed between said surface and belt, the belt andcooperating fxed plate being arranged to receive the nails from theraceway and to present their ends to the wheel, as set forth.

2. The combination of the grinding-wheel, the chute, the fixedshouldered plate forming a bearing for the nails, the belt and itspressure devices, the separator, and means, substantially as described,for operating the separator, whereby the nails are kept separate whilebeing presented to the grinding-wheel, as set forth.

3. The combination of the grinding-wheel, the frame f, the fixedshouldered plate g, having a substantially vertical surface, the belt r,and pulleys q g', supported by said frame, and means, substantially asdescribed, whereby the frame may be adjusted vertically and horizontallyto modify the form of the points made y by the grinding wheel, andpositively held at any position to which it may be adjusted, as setfort-h.

4. The combination of the grinding-wheel, the shouldered plate g, havinga corrugated surface below its shoulder, the belt r and its supportingpulleys, and the spring pressure blocks t t, as set forth.

In testimony whereof we have signed our names to this specification, inthe presence of two subscribing witnesses, this 4th day of September,1884.

Witnesses:

GEORGE E. BENSON, FRED H. ELLIS.

